Refactor tabs.sh to use bash for tab detection

Removed copyright notice and unnecessary comments. Updated script to detect tab characters in source files using bash instead of Python.

Signed-off-by: Jonathan Miller <jmiller2979@gmail.com>

scripts/validate/tabs.sh

@@ -1,65 +1,28 @@
-# ============================================================================
-# Copyright (C) 2025 Moko Consulting <hello@mokoconsulting.tech>
-#
-# This file is part of a Moko Consulting project.
-#
-# SPDX-License-Identifier: GPL-3.0-or-later
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <https://www.gnu.org/licenses/>.
-#
-# FILE INFORMATION
-# DEFGROUP: Scripts.Validate
-# INGROUP: MokoStandards.Release
-# REPO: https://github.com/mokoconsulting-tech/MokoStandards
-# PATH: /scripts/validate/tabs.sh
-# VERSION: 01.00.00
-# BRIEF: Detects tab characters in text files under src and fails if any are present.
-# NOTE:
-# ============================================================================
-
+#!/usr/bin/env bash
 set -euo pipefail
 
-SRC_DIR="${SRC_DIR:-src}"
+# Detect TAB characters in source files tracked by Git. Uses careful
+# handling of filenames and avoids heredoc pitfalls.
 
-json_escape() {
-	python3 -c 'import json,sys; print(json.dumps(sys.argv[1]))' "$1"
-}
+# Limit file globs as appropriate for the repo
+files=$(git ls-files '*.php' '*.js' '*.py' || true)
 
-[ -d "${SRC_DIR}" ] || {
-	printf '{"status":"fail","error":%s}
-' "$(json_escape "src directory missing")"
-	exit 1
-}
+if [ -z "${files}" ]; then
+  echo "No files to check"
+  exit 0
+fi
 
-python3 - <<'PY' "${SRC_DIR}"
-import json
-import sys
-from pathlib import Path
+bad=0
+while IFS= read -r f; do
+  if grep -n $'\t' -- "$f" >/dev/null 2>&1; then
+    echo "TAB found in $f"
+    bad=1
+  fi
+done <<< "${files}"
 
-src = Path(sys.argv[1])
-exclude_dirs = {'vendor','node_modules','dist','.git','build','tmp'}
+if [ "${bad}" -ne 0 ]; then
+  echo "ERROR: Tabs found in repository files" >&2
+  exit 2
+fi
 
-hits = []
-scanned = 0
-
-for p in src.rglob('*'):
-	if not p.is_file():
-		continue
-	if any(part in exclude_dirs for part in p.parts):
-		continue
-	try:
-		data = p.read_bytes()
-	except Exception:
-		continue
-	if b'
+echo "tabs: ok"